› IT to damage a computer's software or data with a harmful program that has been passed from another computer: be infected by/with sth The hackers hijacked personal computers that had been previously infected by a virus. an infected website
› to pass a disease to a person, animal, or plant: be infected by/with sth A lab worker had been infected with a potentially dangerous agent. There was an alarming report of meat from infected animals being sold to supermarkets.